Check it - Foursquare has just announced a series of new specials, designed to be unlocked when groups of people check in.

Sports Authority is running a Flash Special from 3/11 to 4/9. Each store randomly unlocks on one day for the first to check-in after 11am to score a free gift card, up to $500 in value.

This Friday at 10am at Barnes & Noble across the country be one of the first 10 people at any Barnes & Noble to check in after 10am to get $10 off a NOOK Color.

H&M is running an amazing Friends Special: check in with three foursquare friends and get 24% off any item.

At Whole Foods, check in with a friend at any participating location (it’ll say ‘Special’ in the app) and score a free cookie!

Go to any Chili’s nationwide and check in with three friends and your table will get a free appetizer.

When you go to one of over 500 Applebee’s restaurants nationwide, you can take advantage of their Swarm Special, with everyone in the Swarm getting free mozzarella sticks if 5 people check in after 9pm.